Adjustable spring foot for cultivators



Sept. 18, 1951 Filed Dec. 17, 1946 lm"- rD-Q A AAAAAAAAAAAANIFAAd-l all C. E. BARRETT ADJUSTABLE SPRING FOOT FOR CULTIVATORS 2 Sheets-Sheet l Fig. 4.

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Inventar Charlie Elmer Barrett Sept. 18, 1951 C, E BARRETT 2,568,267

ADJUSTABLE SPRING FOOT FOR CULTIVATORS Filed Deo. 17, 1946 A 2 Sheets-Sheet 2 I n ventor Charlie Elmer Barrett md5/wey 17mm Patented Sept. 18, 1951 UNITED STATES PATENTj,ol-rietiff ADJUSTABLE SPRING Foorronj CULTIVATOR'SN f Charlie Elmer Barrett, Ashdown, r l Application December 17, 1946,`seria1`No. 716.702

` The present invention relates to` new andusful improvements in cultivators and more particularly to an adjustable spring cultivator foot whereby the shovel or blade carried by the foot may be easily and quickly adjusted at a desired angle.

An important object of the present invention operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a front elevational view;

Figure 2 is a side elevational view;

Figure 3 is a vertical sectional view taken on the line 3---3r of Figure 2;

Figure 4 is a vertical sectional view through the pivoted foot and showing the screw adjusting means therefor, and

Figure 5 is a perspective view. g

Referring now to the drawings in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a standard having a foot 6 pivoted at its lower end by means of a bolt and nut l. The upper end of the foot above the pivot 'l projects forwardly of the standard as shown at 8 and pivoted to the upper end thereof and positioned at opposite sides of the standard are a pair of links 9 which extend rearwardly in a substantially horizontal position.

A slide ID is pivoted to the rear ends of the links 9, the slide being provided with a pair of upwardly extending rivets or headed pins Il which are slidable in a slot I2 formed in the bottom of a hollow arm I3 which is pivoted at its front end to the standard '5 by means of a pin I4.

The arm I 3 is constructed of an inverted channel-shaped member I5 having outwardly projecting flanges I6 at its lower edges suitably secured to a bottom plate I'I which closes the bottom of y2 claims. (C1. sav- 184) the' channel member-'and 'in 'which the slot |12 is formed.

The rear end of the plate I1 is formed with the downwardly extending flange I 8 having an opening I9 therein with its edges received in a circumferential groove 20 in a shank 2| at the rear end of an adjustingl screw 22 to rotatably support the screw under the arm and to hold the screw against longitudinal movement. The screw 22 is threaded in a boss 23 at the rear end of the slide I0 and the rear end of the shank 2l is formed with an operating wheel 24.

A stationary arm 25 is secured at its front end to the standard 5 by a pair of bolts 26 and a set screw 2l is threaded vertically through the rear end of the arm 25 with its lower end engaging the top of the pivoted arm I3. The arm 25 is formed with a Vertical opening 28 through which a vertical rod 29 extends, the lower end of the rod having an eye 3l! which is pivoted on a transverse pin 3| carried by the pivoted arm I3. A coil spring 32 surrounds the upper portion of the rod 29 with its lower end bearing against the stationary arm 25 and its upper end bearing against' the washer 33 secured to the upper end of the rod bias nut 3l.

A cultivator shovel or blade 35 is secured to the lower end of the foot 6 and the upper end of the standard 5 is secured to a beam 3S by U-bolts 31.

In the operation of the device, the lower end of the foot 6 is adapted to swing rearwardly upon contact with an obstruction. such rearward movement of the lower end of the fooil bringing the upper end 8 thereof forwardly and through its connection with the pivoted arm I3 by the links 9 and slide I0 will exert a downward influence on the arm I3 against the tension of the spring 32. The spring 32 thus yieldably maintains the lower end of the foot in a forwardly projected position.

The angle of the foot 6 may be adjusted by moving the silde III forwardly or rearwardly of the pivoted arm I3 through the manipulation of the adjusting screw 22.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

I claim:

1. An arm having a foot pivoted thereon and spring biased to move in one direction relative to the arm, means carried by the arm for adjusting the inclination of the foot, said means including a slide working against the underside of the arm`and`connected`to thefoot, an internally threaded boss on the slide, an adjusting screw threaded in the boss to move the slide longitudinally on the pivoted arm to adjust the in-V clination of the foot, and a rigidl bear-'ing for. the screw carried by the arm, said boss andsaid bearing being in xed alignment with each other for freely working the screw therein.

2. A standard, an arm rigidly mountedthere` having a slot, a slide working against the underside of said pivoted arm and supoprted in said slot. an internally threaded boss on the slide, an adjusting screw threaded in the boss to move the slide longitudinally on the pivoted arm to adjust the inclination of the foot, and a rigid bearing for the screw carried by the arm, said boss and said bearing being in fixed alignment with each other for freely working the screw therein.

CHARLIE E'LMER BARRETT.

le of this patent:

on, a foot pivoted on the standard, spring biasingy means for the foot, a pivoted arm carried' by the.

UNITED STATES PATENTS Number Name Date 948,262 Upshaw Feb. 1, 1910 987,604 Thomas Mar. 21, 1911 1,644,691 Pritchard- Oct. 11, 1927 y 1,692,843 King Nov. 27, 1928 

